Strontium-90 has a half-life of 28 days.(a) A sample has a mass of 50 mg initially. Find a formulafor the mass remaining after  t days. (b) Find the mass remaining after 40 days (c) How long does it take the sample to decay to a massof 2 mg?(d) Sketch the graph of the mass function

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter5: Inverse, Exponential, And Logarithmic Functions
Section: Chapter Questions
Problem 18T
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Strontium-90 has a half-life of 28 days.
(a) A sample has a mass of 50 mg initially. Find a formula
for the mass remaining after  t days.

(b) Find the mass remaining after 40 days

(c) How long does it take the sample to decay to a mass
of 2 mg?
(d) Sketch the graph of the mass function

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